how many moles are in 2.3 grams of phosphorus?
The Molecular Mass for Phosphorus is 31 grames / mole.So, 31g. P.....................1 mole2.3g. P ..........................x mole\(x= \frac{2,3}{31} = \boxed {0,07} \hbox { moles }\)
1.Molar mass of phos.=30.97g/mol2.n=m/M =2.3g/30.97g/mol =0.07mol3. therefore the amount of moles in 2.3g of phosphorus is 0.07mol
